Results 31 to 40 of about 449,757 (217)
Kinematics of the dwarf irregular galaxy GR8 [PDF]
Astronomy & Astrophysics, 2003 We present deep, high velocity resolution (~1.6 km/s) Giant Meterwave Radio Telescope HI 21cm synthesis images for the faint (M_B ~ -12.1) dwarf irregular galaxy GR8. We find that the velocity field of the galaxy shows a clear systematic large scale pattern, with a maximum amplitude ~10 km/s.
Begum, Ayesha, Chengalur, Jayaram N.
openaire +2 more sources
The Astronomical Journal, 2023 The Star Formation Across Cosmic Time (SFACT) survey is a new narrowband survey designed to detect emission-line galaxies (ELGs) and quasi-stellar objects (QSOs) over a wide range of redshifts in discrete redshift windows.
David J. Carr +4 more
doaj +1 more source
Delayed Massive-star Mechanical Feedback at Low Metallicity
The Astrophysical Journal, 2023 The classical model of massive-star mechanical feedback is based on effects at solar metallicity ( Z _⊙ ), yet feedback parameters are very different at low metallicity.
Michelle C. Jecmen, M. S. Oey
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First Stellar Abundances in the Dwarf Irregular Galaxy Sextans A [PDF]
The Astronomical Journal, 2004 We present the abundance analyses of three isolated A-type supergiant stars in the dwarf irregular galaxy Sextans A from high-resolution spectra the UVES spectrograph at the VLT. Detailed model atmosphere analyses have been used to determine the stellar atmospheric parameters and the elemental abundances of the stars.
Kaufer, A +4 more
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Faint Dwarf galaxies in nearby WINGS clusters: photometric characterization [PDF]
, 2019 In the cores of galaxy clusters there is a population of lows-mass stellar systems such as dwarf Early-type galaxies, ultra-compact dwarf galaxies (UCDs) and ultra diffuse dwarf galaxies. We present here the photometric and morphological characterization
Omizzolo, Alessandro, BETTONI, Daniela
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The star formation history of the Sculptor dwarf irregular galaxy [PDF]
Astronomy & Astrophysics, 2012 A&A accepted; 10 pages, 9 ...
Lianou, Sophia, Cole, Andrew A.
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AT 2017fvz: a nova in the dwarf irregular galaxy NGC 6822 [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 ABSTRACT A transient in the Local Group dwarf irregular galaxy NGC 6822 (Barnard’s Galaxy) was discovered on 2017 August 2 and is only the second classical nova discovered in that galaxy. We conducted optical, near-ultraviolet, and X-ray follow-up observations of the eruption, the results of which we present here.
W Zheng +9 more
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The Relationship Between Recent and Old Star Formation in Dwarf Irregular Galaxies [PDF]
Iranian Journal of Astronomy and AstrophysicsIn this paper, we investigate the structural properties of local dwarf irregular galaxies, including optical scale lengths, position angles, and star formation rates, using data from the LITTLE THINGS survey. Our analysis is based on a sample of 24 dwarf
Aysan Hemmatiortakand +2 more
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The Sagittarius dwarf irregular galaxy: Metallicity and stellar populations [PDF]
Astronomy & Astrophysics, 2002 10 pages, 7 figures, accepted A& ...
Momany, Y. +3 more
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Near IR imaging of Centaurus group dwarf elliptical galaxies
, 2016 Detailed studies of dwarf galaxies in the Local Group have revealed an amazing diversity in their star formation histories. Young and intermediate-age stellar populations are observed in some gas-poor dwarf ellipticals, like Fornax and Carina, where ...
Zoccali, M +4 more
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